A rapid and sensitive liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) method for quantification of sitagliptin in human plasma and urine had been developed. This method was applied to the pharmacokinetics study of sitagliptin tablet after single- and multiple-dosing in Chinese population. Plasma samples were prepared by a liquid-liquid extracted method, and urine samples were diluted. Compounds were analyzed by multiple reaction monitoring (MRM) mode with a electrospray ionization (ESI) interface. Mobile phase consisted of methanol and water (85 : 15, v/v). The linear concentration range of calibration curve was 0.5-1 000 ng.mL-1. and 0.2-100 µg.mL , intra-run/between-run accuracy was 98.98%-103.69% and 97.63%-102.29%, intra-run/between-run precision was <5.51% and 4.26% for plasma and urine sample, respectively. The stability of sitagliptin stock solution was tested for 55 days at -30 °C. Sitagliptin was stable when stored under the following conditions: 24 hours in the autosampler after sample preparation; 24 hours at room temperature, after 3 freeze and thaw cycles (from -30 °C to room temperature), 40 days at -30 °C for plasma and urine samples. The absolute recovery in plasma was 71.1%, and no matrix effect was founded. This method was proved simple, specific, sensitive, rapid and suitable for pharmacokinetics study of sitagliptin in human being.

Using the enterprise resource planning(ERP)management mode,the paper analyzed the present medical insurance payment audit accounts at public hospitals,and probed into the establishment of an information management platform for medical insurance payment audit accounts in the ERP environment.The purpose is to perfect the management of medical insurance payment audit accounts,increase the efficiency of hospital's working capital,strengthen the quality and efficiency of hospital management.

The growing demand for new therapeutic strategies in the medical and pharmaceutic fields has resulted in a pressing need for novel druggable targets. Paradoxically, however, the targets of certain drugs that are already widely used in clinical practice have largely not been annotated. Because the pharmacologic effects of a drug can only be appreciated when its interactions with cellular components are clearly delineated, an integrated deconvolution of drug-target interactions for each drug is necessary. The emerging field of chemical proteomics represents a powerful mass spectrometry (MS)-based affinity chromatography approach for identifying proteome-wide small molecule-protein interactions and mapping these interactions to signaling and metabolic pathways. This technique could comprehensively characterize drug targets, profile the toxicity of known drugs, and identify possible off-target activities. With the use of this technique, candidate drug molecules could be optimized, and predictable side effects might consequently be avoided. Herein, we provide a holistic overview of the major chemical proteomic approaches and highlight recent advances in this area as well as its potential applications in drug discovery.
Chromatography, Affinity ; Drug Delivery Systems ; methods ; Drug Design ; Drug Discovery ; methods ; Humans ; Mass Spectrometry ; Proteome ; chemistry ; Proteomics ; methods ; Small Molecule Libraries ; chemistry

Objective:To investigate the potential mechanism by which Brucella suis vaccine strain S2 induces the apoptosis of BV-2 microglia cells, and to discover new protein targets for neurobrucellosis treatment. Methods:BV-2 microglia cells were treated with Brucella suis vaccine strain S2 for 0, 3, 6, 12 and 24 h. Western blot assay and RT-qPCR were performed to detect the expression of p-JNK and p53 at protein and mRNA levels in BV-2 microglia cells. Cell apoptosis was measured by flow cytometry. Immunofluorescence was used to analyze nuclear p-JNK. Results:Brucella suis vaccine strain S2 could promote the expression of p-JNK and p53 at both protein and mRNA levels and increase nuclear p-JNK in BV-2 microglia cells. Moreover, it could also induce the apoptosis of BV-2 microglia cells. Conclusions:Brucella suis vaccine strain S2 could promote the apoptosis of BV-2 microglia cells through activating JNK and promoting p53 expression.

By comparing the proportion of hospital pharmaceutical functions and work contents of different levels of pharmaceutical professionals at home and abroad, the authors divided pharmaceutical care in medical institutions into basic pharmaceutical care based on drug management and advanced pharmaceutical care based on drug treatment. Different pharmaceutical service levels created different pharmaceutical service values. Pharmaceutical classification service can stimulate the work potential of pharmaceutical professionals at all levels, improve the service level of pharmacists, and provide basis for the better distribution of medical costs in China.

Objective:To compare the clinical, pathological features and prognosis of patients who underwent pancreaticoduodenectomy with standard or extended lymph node dissection for pancreatic ductal adenocarcinoma.Methods:A retrospective study was performed on 158 pancreatic head cancer patients who underwent radical resection at the First Affiliated Hospital of Nanjing Medical University from Jul 2017 to Feb 2019. The clinicopathological characteristics and prognosis between the standard dissection group and the extended dissection group were compared. The relationship between the number of examined lymph nodes, positive lymph nodes, and the lymph node ratio, together with their relationship with survival were analyzed.Results:Survival analysis showed no statistical difference in survival between the standard resection group and the extended resection group ( P=0.99). There were statistical differences in gender and age composition between the two group, but no significant differences in operation time, blood loss, or postoperative complications were found. Patients with less examined lymph nodes tended to be of stage N0. examined lymph nodes is positively correlated with positive lymph nodes but is not significantly correlated with lymph node ratio. Positive lymph nodes is strongly correlated with lymph node ratio. The location of lymph node metastasis was not survival-related. Conclusions:There is no prognostic difference between standard lymph node dissection and extended lymph node dissection in pancreatic cancinoma patients after Whipple procedure.

Risk-adjusted capitation is a payment method that measures capitation rates based on patient′s characteristics such as age, gender, and clinical diseases. The cost standard calculation model is the basis for its application. This paper focused on risk-adjusted capitation, introduced the methodology of risk-adjusted model construction(including identifying the model type, variables, statistical models, and evaluation indicators) and applied an example of the model to measure risk-adjusted capitation payment standard. It is recommended that the academic community should promote the methodology research of risk adjustment model construction. Provinces and cities met the conditions should actively explore the risk adjustment capitation payment in practice, explore and deepen medical insurance payment reform, especially in outpatient services. When applying risk-adjusted capitation, supporting measures such as establishing and continuously improving basic database construction, model updating mechanisms, and adjusting special capitation payment standards should be established.

Objective:To understand the evaluation of 90 pharmaceutical service posts by pharmacists in hospitals, so as to provide basis for rational allocation of pharmaceutical personnel in hospitals.Methods:A questionnaire survey was conducted among 2 582 hospital pharmacists in 31 provinces from August 2019 to April 2020. The survey contents included post classification, staffing qualification and scores related to drug safety.Results:Among the 90 pharmaceutical posts investigated, there were 39 posts with a safety correlation score of 5(the highest score), 36 with 4 and 15 with 3. There were 41 posts in advanced pharmaceutical care and 49 posts in basic pharmaceutical care. The minimum qualifications required was 21 posts with pharmacy related college degree or assistant pharmacist, 61 posts with pharmacy related or clinical pharmacy bachelor degree or pharmacist title, and 8 posts with higher qualification. Advanced pharmaceutical care posts had high drug safety relevance scores and high personnel qualification requirements, mainly involving drug treatment, scientific research and comprehensive management posts.Conclusions:Pharmacists with different qualifications should be allocated according to different levels of pharmaceutical care projects, which can reasonably allocate limited human resources and make the best of their talents.